CN201732036U - Digital drop weight tearing instrument - Google Patents
Digital drop weight tearing instrument Download PDFInfo
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- CN201732036U CN201732036U CN2010202486134U CN201020248613U CN201732036U CN 201732036 U CN201732036 U CN 201732036U CN 2010202486134 U CN2010202486134 U CN 2010202486134U CN 201020248613 U CN201020248613 U CN 201020248613U CN 201732036 U CN201732036 U CN 201732036U
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- fan
- shaped pendulum
- clamper
- instrument
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Abstract
A digital drop weight tearing instrument mainly resolves the problem that the existing mechanical drop weight tearing instrument is low in detection accuracy and high in large-range error. The digital drop weight tearing instrument is characterized in that an optical coupling detector (10) is arranged on a support seat (3), a fan-shaped pendulum (2) is provided with an optical coupling detecting plate (11) capable of corresponding to the optical coupling detector (10), and the optical coupling detector (10) is electrically connected with a circuit board mounted in an engine seat (1). The digital drop weight tearing instrument adopts an optical coupling detection principle, detects instantaneous speed of a detected point after a test sample is torn by the fan-shaped pendulum, obtains corresponding tearing force numerical values through processing of a chip, omits a pointer and a graduated disc, simplifies the structure, and has the advantages of high detection accuracy and convenient reading.
Description
One, technical field:
The utility model relates to a kind of textile lab instrument, is specifically related to a kind of drop hammer type fabric and tears instrument, and especially digital dropping hammer torn instrument.
Two, background technology:
The drop hammer type fabric is torn instrument (hereinafter to be referred as tearing instrument) and is mainly used in the mensuration of measuring various woven fabrics and tearing the tear resistance of the well-regulated non-woven fabric of direction, also is applicable to the mensuration of paper, plastics and some packing material tear resistances.Its test philosophy is by measuring the potential energy that fan-shaped pendulum is consumed when tearing sample, determining the average brute force of sample anti tear indirectly.
Present most of producers use, and to tear instrument be that mechanical type drops hammer and tears instrument, prior mechanical is dropped hammer and is torn instrument and mainly be made up of support, fan-shaped pendulum, supporting seat, bearing slew gear, pointer, index dial, moving clamper, quiet clamper and barrier sheet, supporting seat, bearing slew gear, quiet clamper and block axis are installed on the support, the circle centre position of fan-shaped pendulum is installed on the bearing slew gear by revolving shaft, the circle centre position of fan-shaped pendulum also is provided with pointer, and fan-shaped laying out is provided with and the corresponding index dial of pointer.In use, sample holder on moving clamper and quiet clamper, is discharged barrier sheet behind the sample otch, moving clamper is done in company with fan-shaped swing, tears sample.Utilize to measure pendulum potential energy damping capacity and determine that sample tears the energy of consumption, realize in certain any difference in height by measuring fan-shaped pendulum, fan-shaped pendulum will do work when sample was torn, obtain tearing merit by measure the amount that potential energy that fan-shaped pendulum original state had is consumed when tearing sample, again according to tearing the average tear power that length removes to calculate sample.Prior mechanical is dropped hammer and torn instrument and have following defective: traditional mechanical type tear edge F that tears instrument that drops hammer is represented by angle that in essence the numerical value of converting to power is imprinted on the index dial, is fixed on the edge of fan-shaped pendulum.Indicate the power value with the method for pointer in the work, because the power value index dial of pointer indication exists in actual fabrication than mistake, the power value is when 0-16N, and the power value is big more, and angle is big more, is that linear function increases progressively.And during the actual fabrication label, only per unit power value press design angle to make, intermediate value adopts halving method definite.Power value scale division value still is higher when 0-16N dynamometry shelves, comprised more power values in each scale division value when still having arrived 0-32N and 0-64N, so the degree of accuracy error is increasing.Also produce bigger error with the eyes observed reading simultaneously.Therefore, the precision of detected tear edge is lower.
Three, utility model content:
Drop hammer and tear the deficiency of the low and reading inconvenience of instrument accuracy of detection in order to overcome prior mechanical, the utility model provides a kind of digital dropping hammer to tear instrument, this digital dropping hammer is torn the damping capacity that instrument is used to measure fan-shaped pendulum kinetic energy, promptly is determined at the power that damping capacity that certain any angular velocity produces determines to tear sample.The principle that adopts optocoupler to detect detects the instantaneous velocity that fan-shaped pendulum is torn check point behind the sample, handles drawing corresponding tear edge numerical value by chip, has cancelled pointer and index dial, simplifies the structure, and has the characteristics of accuracy of detection height and convenient reading.
The technical solution of the utility model is: this is digital to drop hammer and tears instrument and comprise support, fan-shaped pendulum, supporting seat, bearing slew gear, moving clamper, quiet clamper and block axis, supporting seat, bearing slew gear, quiet clamper and block axis are installed on the support, the circle centre position of fan-shaped pendulum is installed on the bearing slew gear by revolving shaft, fan-shaped laying out is provided with the counterweight axle, when being used to measure wide range power value, add that different counterweights can realize the measurement of wide range power value.Supporting seat is provided with the optocoupler detecting device, fan-shaped lay out be provided with can with the corresponding optocoupler detection lug of optocoupler detecting device; The described optocoupler detecting device circuit board interior with being installed on support is electrically connected.
Described moving clamper is fixed on fan-shaped lay out and corresponding with quiet clamper, and moving clamper all adopts pneumatic pinch with quiet clamper, and block axis is stretched by cylinder control, can block fan-shaped pendulum when block axis is stretched out.
Described fan-shaped laying out is provided with the counterweigh regulating block, and the centre of gravity place that is used to regulate whole fan-shaped pendulum drops on design point.
The beneficial effects of the utility model are: owing to take such scheme; after fan-shaped pendulum is torn sample; the optocoupler detection lug slips over the optocoupler detecting device along its rotary track; optocoupler detecting device acquired signal and the chip that is transported in the circuit board are handled; and then draw the instantaneous velocity of optocoupler detection lug through the optocoupler detecting device; calculate corresponding tear edge numerical value, on the display of microcomputer or the display screen on the support, directly see.The utility model has been cancelled pointer and index dial, simplifies the structure, and has the characteristics of accuracy of detection height and convenient reading.
Four, description of drawings:
Accompanying drawing 1 is a structural representation of the present utility model;
Accompanying drawing 2 is right views of Fig. 1;
Accompanying drawing 3 is stereographic maps of the present utility model;
Accompanying drawing 4 is work block diagrams of the present utility model.
1-support among the figure, the fan-shaped pendulum of 2-, the 3-supporting seat, 4-bearing slew gear, 5-moves clamper, the quiet clamper of 6-, 7-block axis, 8-revolving shaft, 9-counterweight axle, 10-optocoupler detecting device, 11-optocoupler detection lug, 12-counterweigh regulating block, 13-sample, 14-0 ~ 32N counterweight, 15-0 ~ 64N counterweight.
Five, embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
By Fig. 1 in conjunction with Fig. 2, Fig. 3, shown in Figure 4, this digital instrument of tearing comprises support 1, fan-shaped pendulum 2, supporting seat 3, bearing slew gear 4, moving clamper 5, quiet clamper 6 and block axis 7, supporting seat 3, bearing slew gear 4, quiet clamper 6 and block axis 7 are installed on the support 1, the circle centre position of fan-shaped pendulum 2 is installed on the bearing slew gear 4 by revolving shaft 8, fan-shaped pendulum 2 is provided with counterweight axle 9, can hang 0 ~ 32N counterweight 14 or 0 ~ 64N counterweight 15 on the counterweight axle 9, when being used to measure wide range power value, add that different counterweights can realize the measurement of wide range power value.Supporting seat 3 is provided with optocoupler detecting device 10, fan-shaped pendulum 2 be provided with can with optocoupler detecting device 10 corresponding optocoupler detection lugs 11; Described optocoupler detecting device 10 is electrically connected with circuit board in being installed on support 1.After fan-shaped pendulum 2 is torn sample 13; optocoupler detection lug 11 slips over optocoupler detecting device 10 along its rotary track; optocoupler detecting device 10 acquired signal and the chip that is transported in the circuit board are handled; and then draw optocoupler detection lug 11 instantaneous velocity through optocoupler detecting devices 10; calculate corresponding tear edge numerical value, on the display of microcomputer or the display screen on the support, directly see.
The utility model mainly is to utilize law of conservation of energy, according to kinetic energy formula
Wherein T is a kinetic energy, I
ZBe moment of inertia, ω is an angular velocity, and fan-shaped pendulum 2 realizes at certain any angular velocity by measuring.Whole test process is based on the function transfer principle, and fan-shaped pendulum 2 will do work when sample 13 was torn, and obtains tearing merit by measure the amount that can be consumed that fan-shaped pendulum 2 original states are had when tearing sample.Draw formula by theorem of kinetic energy
According to tearing the average tear power F that length S calculates sample 13.
The utility model adopt to be measured the kinetic energy damping capacity of dropping hammer and is determined that sample tears the energy of consumption, and from physical angle, fan-shaped pendulum 2 comes down to a compound pendulum.Whole test process is based on the function transfer principle.Pendulum will do work when sample was torn, and obtained tearing merit by measure the pendulum amount that can be consumed that original state had when tearing sample, again according to tearing the average tear power that length removes to calculate sample.It can have several channels to go to realize.One: measure the damping capacity of fan-shaped pendulum 2 potential energy, the difference in height of promptly measuring fan-shaped pendulum 2 work front and back centers of gravity obtains; Its two: measure the damping capacity of fan-shaped pendulum 2 kinetic energy, promptly measure fan-shaped pendulum 2 and determine in the damping capacity that certain any angular velocity produces.So we will be called potential energy method based on the method for measuring fan-shaped pendulum 2 potential energy damping capacitys; To be called the kinetic energy method based on the method for measuring fan-shaped pendulum 2 kinetic energy damping capacitys.What traditional mechanical type dropped hammer that the ceremony of tearing adopts is potential energy method, indicates the power value with the method for pointer, the index error when in actual fabrication, existing than mistake and reading owing to power value index dial, and the power value that finally draws is to have bigger error.And the power value that adopts kinetic energy method angle measurement speed to draw is with the linear function write-in program, and during different angular velocity, chip calculates automatically, draws an accurate power value, directly sees from display screen then when recording each test.Therefore, the utility model measurement result is more accurate, also simplifies the structure convenient reading simultaneously.
In conjunction with shown in Figure 4, the course of work of the present utility model is as follows by Fig. 3:
During empty the pendulum (not adding any sample):
When adding sample:
Optocoupler detecting device 10 records time t with this and is sent to single-chip microcomputer when sky is put, because the width of known optocoupler detection lug 11, therefore can v=s/t by formula.Can calculate the average velocity of optocoupler detection lug 11, the turning radius r of known optocoupler detection lug 11, magnitude of angular velocity ω in the time of therefore can calculating the clearancen pendulum by optocoupler detecting device 10
0=v/r.When adding sample 13, write down a time t value equally, draw by formula and add sample relief angle velocity amplitude ω
iTheir squared differences is passed through formula
In the formula
Be the moment of inertia of rigid body to rotation axis.Given data during for design.S is 86 millimeters of standard codes (it is 43 millimeters that sample is torn length, tears distance for its two times).
In conjunction with shown in Figure 3, described moving clamper 5 is fixed on the fan-shaped pendulum 2 and is corresponding with quiet clamper 6 by Fig. 2, and moving clamper 5 all adopts pneumatic pinch with quiet clamper 6, and block axis 7 is flexible by cylinder control, can block fan-shaped pendulum 2 when block axis 7 is stretched out.But moving clamper 5 and quiet clamper 6 firm grip samples 13, block axis 7 is flexible fast convenient.
In conjunction with Fig. 2, shown in Figure 3, described fan-shaped pendulum 2 is provided with counterweigh regulating block 12 by Fig. 1.Counterweigh regulating block 12 can be adjusted the balance of fan-shaped pendulum 2, and the centre of gravity place that is used to regulate whole fan-shaped pendulum 2 drops on design point.
Claims (3)
1. digital dropping hammer torn instrument, comprise support (1), fan-shaped pendulum (2), supporting seat (3), bearing slew gear (4), moving clamper (5), quiet clamper (6) and block axis (7), supporting seat (3), bearing slew gear (4), quiet clamper (6) and block axis (7) are installed on the support (1), the circle centre position of fan-shaped pendulum (2) is installed on the bearing slew gear (4) by revolving shaft (8), fan-shaped pendulum (2) is provided with counterweight axle (9), it is characterized in that: supporting seat (3) is provided with optocoupler detecting device (10), fan-shaped pendulum (2) be provided with can with the corresponding optocoupler detection lug of optocoupler detecting device (10) (11); Described optocoupler detecting device (10) circuit board interior with being installed on support (1) is electrically connected.
2. digital dropping hammer according to claim 1 torn instrument, it is characterized in that: it is last and corresponding with quiet clamper (6) that described moving clamper (5) is fixed on fan-shaped pendulum (2), moving clamper (5) all adopts pneumatic pinch with quiet clamper (6), block axis (7) is flexible by cylinder control, and block axis (7) can be blocked fan-shaped pendulum (2) when stretching out.
3. digital dropping hammer according to claim 1 and 2 torn instrument, it is characterized in that: fan-shaped pendulum (2) is provided with counterweigh regulating block (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202486134U CN201732036U (en) | 2010-06-29 | 2010-06-29 | Digital drop weight tearing instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202486134U CN201732036U (en) | 2010-06-29 | 2010-06-29 | Digital drop weight tearing instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201732036U true CN201732036U (en) | 2011-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202486134U Expired - Lifetime CN201732036U (en) | 2010-06-29 | 2010-06-29 | Digital drop weight tearing instrument |
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| CN (1) | CN201732036U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102175551A (en) * | 2011-02-22 | 2011-09-07 | 南通宏大实验仪器有限公司 | Detecting device and detecting method for indication error of drop hammer type tearing meter |
| CN103512814A (en) * | 2012-06-14 | 2014-01-15 | 中国石油天然气集团公司 | Drop weight tear test system and method thereof |
| CN103643470A (en) * | 2013-11-18 | 2014-03-19 | 无锡俊达测试技术服务有限公司 | Fixation device for cloth tearing strength test |
| CN107132115A (en) * | 2017-07-05 | 2017-09-05 | 浙江工业职业技术学院 | A kind of fabric sewing strength determines device |
| CN111289400A (en) * | 2020-03-07 | 2020-06-16 | 深圳天溯计量检测股份有限公司 | Calibration device for drop-weight fabric tearing instrument |
-
2010
- 2010-06-29 CN CN2010202486134U patent/CN201732036U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102175551A (en) * | 2011-02-22 | 2011-09-07 | 南通宏大实验仪器有限公司 | Detecting device and detecting method for indication error of drop hammer type tearing meter |
| CN102175551B (en) * | 2011-02-22 | 2014-04-16 | 南通宏大实验仪器有限公司 | Detecting device and detecting method for indication error of drop hammer type tearing meter |
| CN103512814A (en) * | 2012-06-14 | 2014-01-15 | 中国石油天然气集团公司 | Drop weight tear test system and method thereof |
| CN103512814B (en) * | 2012-06-14 | 2015-07-08 | 中国石油天然气集团公司 | Drop weight tear test system and method thereof |
| CN103643470A (en) * | 2013-11-18 | 2014-03-19 | 无锡俊达测试技术服务有限公司 | Fixation device for cloth tearing strength test |
| CN103643470B (en) * | 2013-11-18 | 2015-10-21 | 无锡俊达测试技术服务有限公司 | A kind of cloth tearing toughness fixer for measuring |
| CN107132115A (en) * | 2017-07-05 | 2017-09-05 | 浙江工业职业技术学院 | A kind of fabric sewing strength determines device |
| CN107132115B (en) * | 2017-07-05 | 2020-03-24 | 浙江工业职业技术学院 | Fabric sewing strength measuring device |
| CN111289400A (en) * | 2020-03-07 | 2020-06-16 | 深圳天溯计量检测股份有限公司 | Calibration device for drop-weight fabric tearing instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110202 |
|
| CX01 | Expiry of patent term |